Elongated casement window



May 22, 1962 Filed Oct. 20, 1959 20 t 'I. II; 1

D. H. REVE'LL ET AL ELONGATED CASEMENT WINDOW 2 Sheets-Sheet 1 SWING UT INVENTORS DONALD H. PEVELL RICHARD C. FULK BY g M ATTORNEYS May 22, 1962 D. H. REVELL ET AL ELONGATED CASEMEN'I' WINDOW 2 Sheets-Sheet 2 Filed Oct. 20, 1959 INVENTORS BY wm QWAM ux m wr C H D mm A W mm A 6 1 ATTORNEYS 3,035,316 ELONGATED CASEMENT WINDOW Donald H. Revell and Richard C. Fulk, Louisville, Ky., assignors to Reynolds Metals Company, Richmond, Va., a corporation of Delaware Filed Oct. 20, 1959, Ser. No. 847,636 2 Claims. (Cl. 20-53) This invention relates to casement windows, doors, or the like, and more particularly to such structures in which the jamb portions are of a length necessitating three or more hinges serving as aligning means for the pivoted sash.

As is known, a conventional hinge normally serves not only to guide or align the sash as it moves into and out of contact with the stationary frame, but also serves to support that sash with respect to that frame. When, however, three or more hinges which both support and align the sash are employed, a hinging problem is presented with prefabricated members which may be distorted when mounted in wall openings. It is found, for example, that when prefabricated window frames and sash are of a dimension requiring only two such hinges, a slight distortion of the frame, when mounted in the wall, will not cause binding of those hinges, but when of a dimension requiring three such hinges even a small amount of distortion impairs the hinging action and may prevent proper sealing of the sash against the frame. It is a purpose of this invention to overcome this problem in a simple and inexpensive manner.

An object of the invention is to provide an improved elongated casement window construction.

' Another object is to provide an improved combination of multiple hinges for windows or the like operable under conditions of slight distortion of the window frame.

A further object is to provide an improved hinge-like article having the characteristic of guiding hinged components while being normally devoid of a supporting function therefor.

Other objects and advantages will become more apparent as the description proceeds and when considered in conjunction with the accompanying drawings in which:

FIG. 1 is an exterior elevation view of a casement window constructed in accordance with the invention;

FIG. 2 is a sectional view to a larger scale taken on line 2-2 of FIG. 1;

FIG. 3 is a sectional view taken on line 3-3 of FIG. 1;

FIG. 4 is a sectional view taken on line 4-4 of FIG. 1;

FIG. 5 is a front elevation of a strike plate adapted for mounting on the exterior side of the window sash frame shown in FIG. 1;

FIG. 5A is a side elevation of the plate of FIG. 5;

FIG. 5B is an end elevation of the plate of FIG. 5;

FIG. 6 is a front elevation of a pressure block adapted for mounting on the exterior side of the window casement frame shown in FIG. 1 and for cooperation with the plate of FIG. 5;

FIG. 6A is a side elevation of the block of FIG. 6; and

FIG. 6B is an end elevation of the block of FIG. 6.

In accordance with the invention there is provided a prefabricated casement frame which is mounted in an opening in a building wall and which cooperates with a sash pivoted thereto. Two hinges which both support and spasms Patented May 22, 1962 guide the sash in its movement are mounted upon the frame and sash adjacent the ends of respective elongated jamb portions thereof which are adapted to contact each other in sealing relation. Intermediate these hinges an improved pressure block and striker plate are mounted upon the respective casement frame and sash and serve as a third guiding hinge without supporting function as the sash is moved into contact with the casement frame. The combination accordingly avoids the customary problem of maintaining an exact alignment of three hinges as found in structures where the easement frame is distorted due to its mounting in the building wall. v

Referring now to FIG. 1, a generally rectangular casement frame having parallel jamb portions 10 and 11 and parallel jamb portions 12 and 13 is provided. Each of these jamb portions may comprise uniformly shaped cross sections of extruded metal, aluminum being a particularly well suited material, and being welded to each other along corner bevels to form a unitary frame structure. The length of jamb portions 10 and 11 is such as to require three or more hinging guide points for the sash which cooperates with the easement frame and which frame defines the vent opening.

As seen in FIGS. 2, 3, and 4, the frame is mounted in an opening of a building wall 14 formed of any suitable structural material, such as concrete. For the purpose of securely fastening the casement frame in place, a plurality of shims 15 may be disposed between the surface of the wall opening and the several jarnb portions of the casement frame and against which shims the ribs 16 of the back wall of the extruded jambs are brought to bear as by means of expanding anchors 17 extending into the wall. Suitable calking 18 and 19 serves to prevent leakage around the mounted casement frame.

It has been found, however, that despite normal precautions to prevent distortion of the prefabricated casement frame when so installed in wall 14, slight distortion may still occur and which would result in binding of three or more combined supporting and guiding hinges on the elongated jamb portions. As will now become apparent, such slight distortion may be disregarded and with the casement frame installed as previously described the following combination of structure is employed.

Conventional hinges 2d and 21 are mounted upon the elongated jamb portion 10 adjacent the ends of the casement frame, each hinge as best shown in FIG. 2 having a stationary leg 22 rigidly mounted upon the easement frame and extending exteriorly from the window a suitable distance so as to place the axis 23 of the hinge in a plane spaced from the plane of that casement frame. The hinge further comprises a movable leg 24 pivoted to the stationary leg as by means of pin 25 and may be reinforced in one or more directions as by means of a web- 26. Mounted upon and supported by hinges 20 and 21, as well as guided thereby, is a rectangular sash frame comprising elongated parallel jam b portions 27 and 28 joined to parallel jamb portions 29 and 30.

These sash frame portions likewise may be of extruded metal, such as aluminum. Adapted for engagement with the innermost surfaces of the sash frame is a retainer 31 held in place as by a screw bolt 32 and serving to position the window pane 33 which in turn is held in place by putty 34, or the like. Slots 35 and 36 are provided in the confronting side surfaces of each of the casemerit frame and sash frame within which slots a suitable resilient sealing strip, such as conventional weather-stripping material, may be placed; the strip in slot being adapted for sealing engagement with the shoulder 37 of the sash frame and the strip in slot 36 being adapted for sealing engagement with the shoulder 38 of the casement frame.

For the purpose of locking the sash frame in place one or more conventional locking means 39 and 40 (FIG. 1) may be employed on the interior faces of the structure. For example, as seen in FIG. 4, the casement frame may have aflixed thereto a plate 41 and the sash frame jamb portion 28 may carry a pivoted handle 42 having an arm 43 adapted for selective locking engagement with plate 41; moreover, if desired, any conventional window actuator (not shown) may be mounted adjacent the sill jamb portion 12 of the casement frame and attached to the sill jamb portion 29 of the sash frame.

With the foregoing construction in mind reference now is made to FIGS. 1 and 3 showing a significant feature of the present invention. Located between the combined supporting and guiding hinges 20 and 21, and preferably at the midpoint therebetween, is a pressure block member, the configuration of which is best depicted in FIGS. 6, 6A and 6B.

This member may conveniently be formed of a weather resisting material such as plated bronze, stainless steel, or the like, and when viewed endwise comprises a generally Z-shaped form having an inner shoulder 50, an outer shoulder 51 and an intermediate section 52. Inner shoul der is provided with suitable holes 53 for screws engaging with outer side of the casement frame and when assembled in position, the outer shoulder 51 extends beyond the shoulder 38 of the outer side of the easement frame, as seen in FIG. 3. In length, the pressure block is quite short as compared with the length of the elongated jamb portions of the window structure, a length of block approximately 2 inches being well suited for a casement window in which the jamb portion 10 is in excess of 6 feet. As an important feature, the outer shoulder lies in a plane, outwardly of the plane of the easement frame and has a convex surface 54 or lip on its underside.

Cooperating with the described pressure block is a striker plate best shown in FIGS. 5, 5A and 5B. This plate may comprise a flat undersurface 55 with a forwardly projecting lip portion 56 and with suitable holes 57 for attachment of the plate to the jamb 27 of the sash frame. The outer surface 58 of the lip portion preferably is convexly shaped for engagement with the convex undersurfaces 54 of the pressure block. The plate, moreover, is mounted upon jamb 27 generally co-terminous with the edge of that jamb portion and arranged to extend well within the projecting presure block shoulder 51 when the sash frame is moved to its limit in a first or closing direction.

The operation of the structure will now be self-evident by reference to FIGS. 1 and 3. Since the axis 23 of the supporting and guiding hinges is outboard of the easement and sash frames, as the sash is pivoted outwardly as shown by the arrow in FIG. 3 the convex surface 58 of the plate slides along the convex surface 54 of the stationary block until contact of the shoulders 37 and 38 with the respective seals is broken and after this sliding movement, the sash is pivoted and supported only by the hinges 20 and 21.

When moving in a closing direction, the plate on the Sash, however, engages first with the pressure block before the shoulders 37 and 38 come into contact with those seals. Should the easement frame be warped or distorted due to its mounting in the building wall, contact of the plate and block immediately establishes a third guiding hinge structure and as the sash is further moved in a closing direction, the camming action of respective surfaces 54 and 58 provides a guiding action transversely of the frames and causes those frames to come into substantially uniform contact with each other despite the distortion which may be present. As the sash moves fully to closed position, the seals in the slots 35 and 36 are contacted by the shoulders 37 and 33 on the respective frames and an efiicient sealing results.

Having thus described the invention and shown a particular embodiment of the same, it will be understood, of course, that We do not wish to be limited thereto and therefore contemplate by the appended claims, to cover any modifications as fall within the true spirit and scope of our invention.

We claim:

1. In a casement window, in combination, a casement frame defining a vent opening and having a vertical jamb portion of elongated dimension, means securing said casement frame in stationary position within a building wall, a sash frame mounted in said opening and having a vertical jamb portion of elongated dimension requiring at least three hinge guiding points, said sash frame being pivotally movable in a first direction into overlapping contact with a side surface of said stationary casement frame and pivotally movable in a second direction out of contact therewith, a pair of hinges secured to said casement frame adjacent the respective ends of the elongated vertical jamb portion thereof and pivotally attached to said sash frame in supporting relation thereto, said hinges being pivotable along an axis spaced from the stationary plane of said casement frame thereby to swing said movable sash frame to and from a window-closing plane parallel to said stationary plane of said casement frame, a pressure block rigidly secured to said casement frame in spaced relation to and intermediate said hinges and having a length substantially shorter than the length of said jamb portions, said block having a vertically extending convex underside spaced from the plane of said casement frame, and a striker plate rigidly mounted upon. said sash frame adjacent the edge of said jamb portion thereof and having a vertically extending convex surface adapted to engage the convex underside of said block whereby upon movement of said sash frame to its limit in said first direction said plate engages with said block to serve as a third guiding hinge and to hold each of said jamb portions substantially uniformly in side-by-side contact with each other despite distortion caused to said casement frame by its mounting in said building wall.

2. In a weather-stripped casement window, in combination, a casement frame defining a vent opening and having a vertical jamb portion of elongated dimension, means securing said casement frame in stationary position within a building wall, a sash frame mounted in said opening and having a vertical jamb portion of elongated dimension requiring at least three hinge guiding points, said sash frame being pivotally movable in a first direction into overlapping contact with a side surface of said casement frame and pivotally movable in a second direction out of contact therewith, a pair of hinges secured to said casement frame adjacent the respective ends of the elongated jamb portion thereof and pivotally attached to said sash frame in supporting relation thereto, said hinges being pivotable along an axis spaced from the stationary plane of said casement frame thereby to swing said movable sash frame to and from a windowclosing plane parallel to said stationary plane of said casement frame, a pressure block rigidly secured to said casement frame in spaced relation to and intermediate said hinges on the external side of said casement frame and having a length substantially shorter than the length of said jamb portions, said block having a vertically eX- tending convex underside spaced from the plane of said casement frame, a striker plate rigidly mounted upon the external surface of said sash frame adjacent the edge of the jamb portion thereof and having a vertically extending convex surface adapted to engage the convex underside of said block when said sash frame occupies said window-closing plane, sealing means carried by said casement frame jamb portion in confronting relation to References Cited in the file of this patent said sash frame jamb portion, and sealing means carried UNITED STATES PATENTS by said sash frame amb portion 1n confronting relatlon to said casement frame jamb portion whereby upon move- 1,635,920 f y 12, 1927 ment of said sash frame to its limit in said first direction 5 1,907,091 Pettlt y 2, 1933 said plate engages with said block to serve as a third 119251817 Plym P 5, 1933 guiding hinge and to hold each of said jarnb portions 1,960,920 Plym y 29, 1934 substantially uniformly in side-by-side contact with each 2,619,204 f 25, 1952 other and with the respective sealing means on the other 2,651,392 Cralg et a1 P 8, 1953 jamb portion despite distortion caused to said casement 10 2,784,459 Anderbefg et a1 Mali 12, 1957 frame by its mounting in said building wall. 2,926,399 Ramunas 1, 1960 

